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Northern Dusky Salamander
Desmognathus fuscus
The dusky salamander is a small, semi-aquatic lungless salamander from eastern North America. An excellent jumper, it thrives in a 60L paludarium with flowing, oxygen-rich water, gravel, and wet hiding spots.
Class:Amphibia
Order:Caudata
Family:Plethodontidae
Subfamily:Plethodontinae
Genus:Desmognathus
Species:Desmognathus fuscus
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Water Temperature
10 - 18 °C
pH Value
6.5 - 7.5
Environment
Freshwater / Semi-aquatic
Humidity
80 - 100 %
Day temperature
15 - 20 °C
Night temperature
10 - 14 °C
Ambient temperature
15 - 20 °C
Minimum enclosure
>= 45 L
UVB
None
Species description
Geographical Origin and Habitat: A shy, semi-aquatic species endemic to mossy ravines, cold mountain streams, spray zones, and waterfalls of eastern North America (from the Appalachians to southeastern Canada). They inhabit wet rock crevices near freezing water.
Taxonomy and Genetics: Belongs to the Plethodontidae family (lungless salamanders), commonly known as the Northern Dusky Salamander. The genus Desmognathus features a unique cranial structure: unlike other salamanders, they lift their upper skull to open their mouths rather than lowering their lower jaw.
Behavior and Habits: Primarily nocturnal. During the day, they remain hidden and inactive under damp rocks or stones near streams. At night, they emerge to actively hunt small invertebrates along wet stream margins.
Morphology: Adults reach a length of 8-12 cm. Mature females are rounder and heavier due to carrying eggs, while adult males develop a proportionally wider head.
Care, breeding and tankmates
Terrarium Setup: Requires a horizontal semi-aquatic terrarium or paludarium. Provide a cold, clean water section (5-10 cm deep) with continuous current (via a filter or water pump) and a land section made of smooth rocks, live moss, and bark.
Lighting and Heating: Prefers cool temperatures between 15 and 20°C. Temperatures above 23-24°C are dangerous and can be fatal. A water chiller or placing the terrarium in a cool basement is essential in summer. A night temperature drop to 10-14°C is recommended. Provide low-intensity LED lighting.
Humidity and Hydration: Being lungless, they breathe through their skin, which must remain constantly wet. Maintain 80-100% humidity with high ventilation to prevent stagnant air. Water must be chlorine-free; reconstituted RO water is recommended.
Feeding and Supplementation: Carnivorous. Feed on small, live invertebrates like bloodworms (chironomus), chopped earthworms, springtails, and fruit flies. Dust prey items with calcium and vitamin powder to support bone health.
Compatibility: Peaceful and gregarious; can be kept in small groups. Do not house with predatory fish or larger amphibians to prevent predation or competition.
Health and Common Diseases: Highly sensitive to overheating and poor water quality. Common issues include skin fungal infections and bacterial septicemia (Red Leg syndrome). Never handle with bare hands.
Geographic Origin and Distribution
A shy, semi-aquatic species endemic to mossy ravines, cold mountain streams, spray zones, and waterfalls of eastern North America (from the Appalachians to southeastern Canada). They inhabit wet rock crevices near freezing water.
Origin
North America
Amphibian profile
- Diet
- No verified data available
- Life expectancy
- No verified data available
- Adult size
- 10.05 cm
- Lifestyle/Microhabitat
- No verified data available
- Activity cycle
- No verified data available
- Sociality
- No verified data available
- Reproduction
- No verified data available
- Toxicity
- No verified data available
- Life stage
- No verified data available
- Handling tolerance
- No verified data available
- Brumation
- No verified data available
- Molting
- No verified data available
The catalog's scalar value is 10.05 cm. The AmphiBIO v1 source reports a maximum adult measurement of 10.05 cm for this species, recorded as total length (TL). These figures are not interchangeable: the first is the profile's editorial reference, whereas the second is a published maximum under a specific measurement convention; differences among sources can reflect sex, population, life stage and measuring method.
Image gallery
Licensed images linked to the species or, when marked, to the closest representative taxon.
Related species
Recommendations grouped by close relatives, companion choices, and similar care.
